pandas 数据帧到 json 有多个键

Question

我有一个 pandas 数据框，如下所示：

id	x1	x2	x3	action
23432	example1	1	name	Create
678786	example2	1	name	Create

如何将 pandas 数据帧转换为这种 json 格式？

[
  {
    "action": "Create",
    "payload": {
      "id": "23432",
      "x1": "example1",
      "x2": "1",
      "x3": "name"    
    }
  },
  {
    "action": "Create",
    "payload": {
      "id": "678786",
      "x1": "example2",
      "x2": "1",
      "x3": "name" 
    }
 }
]

我试过 pd.json_normalize 但无法正常工作。我还引用了 this 问题，但由于需要 groupby，它有点不同。

Answer 1

如果您不介意输入列，一种解决方案可以是：

df['payload'] = df[['id','x1','x2','x3']].to_dict(orient='records')
df_json = df[['action','payload']].to_json(orient='records')
print(df_json)

Answer 2

import pandas as pd
import json

# intialise data of lists.
data = {'id':['23432', '678786'],
        'x1':['example1', 'example2'],
        'x2':['1', '1'],
        'x3':['name', 'name'],
        'action':['Create', 'Create']}

# Create DataFrame
df = pd.DataFrame(data)

print(json.dumps(df.apply(func=lambda x:{'action':x.action,'payload':x[['id','x1','x2','x3']].to_dict()},axis=1).to_list()))

pandas 数据帧到 json 有多个键

pandas dataframe to json with multiple keys

python

json

pandas

json-normalize